Excel 2013  / 2003 / 2007 / 2010 / 2016

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  Adding a header and footer to the worksheet

  Headers and footers are widely used in the Microsoft Word document, but you should know that Excel has headers and footers too.
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  Changing a spreadsheet tabs color

  Color code is a perfect way to identify content and draw an attention to it. In Excel you can easily change colors of one or more spreadsheet tabs.
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  How to freeze columns and rows

  You can freeze your column and row labels so that you can view them no matter how far you scroll down or to the right in your worksheet.
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  Edit cells data

  You can edit data in cells this in several ways:
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  Basic Formula operators

  There are several operators that could be used in formulas.
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  How to select row and column by keyboard
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  Using the formula bar as a calculator

  If you simply need to perform a calculation, you can use the Formula bar as a calculator.
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  Referencing cells outside the worksheet

  Formulas can refer to cells in other worksheets-and the worksheets don't even have to be in the same workbook. Excel uses a special type of notation to handle these types of references.
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  Shortcut key to switch between relative, absolute and mixed references

  You can enter nonrelative references (absolute or mixed) manually by inserting dollar signs in the appropriate positions, or you can use a handy shortcut - F4 key.
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  Copy formulas for selected cells fast and easy

  You can use "Copy" (Ctrl+C) and "Paste" (Ctrl+V) options, but there is faster way to "copy" a formula to multiple adjacent cells.